CN211654513U

CN211654513U - Magnetic assembly and power electronic equipment

Info

Publication number: CN211654513U
Application number: CN202020291354.7U
Authority: CN
Inventors: 李安红; 刘小平
Original assignee: Shenzhen Hopewind Electric Co Ltd
Current assignee: Shenzhen Hopewind Electric Co Ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-10-09
Anticipated expiration: 2030-03-11

Abstract

The application discloses a magnetic assembly and power electronic equipment, wherein the magnetic assembly comprises a magnetic core, a coil and a supporting plate; the magnetic core is fixed on the supporting plate, and the wire is wound on the magnetic core; the utility model also comprises a surrounding frame; the surrounding frame is wrapped on the periphery of the solenoid and is abutted to the supporting plate; the gap between the enclosing frame and the solenoid forms a plurality of heat dissipation air channels, so that cold air can dissipate heat of the magnetic core and the solenoid through the heat dissipation air channels. This application encloses the frame through the cladding at solenoid outlying, encloses the clearance between frame and the solenoid and forms a plurality of heat dissipation wind channels for cold wind dispels the heat to magnetic core and solenoid through heat dissipation wind channel, has reduced the temperature of magnetic core and solenoid, has promoted magnetic component's radiating efficiency.

Description

Magnetic assembly and power electronic equipment

Technical Field

The application relates to the technical field of power electronics, in particular to a magnetic assembly and power electronic equipment.

Background

In a wind power generation system, the air-cooled converter does not need a water-cooling control part, so that the whole cost is lower, the stability is better, and the air-cooled converter is widely applied. In order to reduce unit cost, the power of the wind driven generator is increased, and the required inductive current is also increased, for example, the grid side inductance of a 3.0MW double-fed converter needs to be designed to be 650A/50Hz, the machine side inductance needs to be designed to be 1100A/10Hz, and the volume of the inductance is very large and the cost is high without improving the heat dissipation efficiency.

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the present application is to provide a magnetic assembly and a power electronic device, so as to solve the problems of a large size and low heat dissipation efficiency of an inductor in an existing wind power converter.

The technical scheme adopted by the application for solving the technical problems is as follows:

according to one aspect of the present application, there is provided a magnetic assembly comprising a magnetic core, a coil, and a support plate; the magnetic core is fixed on the supporting plate, and the wire is wound on the magnetic core; the utility model also comprises a surrounding frame;

the surrounding frame is wrapped on the periphery of the solenoid and is abutted to the supporting plate; the gap between the enclosing frame and the solenoid forms a plurality of heat dissipation air channels, so that cold air can dissipate heat of the magnetic core and the solenoid through the heat dissipation air channels.

In one embodiment, the enclosure encloses at least part of the pack.

In one embodiment, the bottom end of the enclosure frame is flush with the bottom end of the support plate.

In one embodiment, the magnetic assembly further comprises at least one connection end extending from the bottom end of the enclosure frame to the outside.

In one embodiment, the plurality of heat dissipation air ducts are symmetrically distributed.

According to another aspect of the present application, there is provided a power electronic device comprising the magnetic component.

The magnetic component and the power electronic equipment provided by the embodiment of the application form a plurality of heat dissipation air channels through the surrounding frame surrounding the coil, so that cold air dissipates heat of the magnetic core and the coil through the heat dissipation air channels, the temperature of the magnetic core and the temperature of the coil are reduced, and the heat dissipation efficiency of the magnetic component is improved.

Drawings

Fig. 1 is a perspective view of a magnetic assembly provided in an embodiment of the present application;

fig. 2 is a schematic bottom view of a magnetic assembly provided in an embodiment of the present application;

fig. 3 is a schematic top view of a magnetic assembly provided in an embodiment of the present application;

fig. 4 is a schematic view of a portion of a magnetic assembly according to an embodiment of the present disclosure.

The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer and clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

First embodiment

As shown in fig. 1 to 4, a first embodiment of the present application provides a magnetic assembly comprising a magnetic core 11, a coil 12 and a support plate 13; the magnetic core 11 is fixed on the supporting plate 13, and the coil 12 is wound on the magnetic core 11; the magnetic assembly further comprises an enclosure 14;

the surrounding frame 14 is wrapped on the periphery of the solenoid 12 and is abutted against the supporting plate 13; the gaps between the enclosure frame 14 and the coils 12 form a plurality of heat dissipation air ducts (such as 141, 142, 143, and 144 shown in fig. 3), so that cold air passes through the heat dissipation air ducts to dissipate heat of the magnetic core 11 and the coils 12.

In this embodiment, the enclosure 14 encloses a portion of the pack 12. In other examples, it is also possible that the enclosure 14 covers all of the coils 12.

In the present embodiment, the plurality of heat dissipation air ducts (such as 141, 142, 143, 144 shown in fig. 3) are symmetrically distributed, and the bottom end of the enclosure frame 14 is flush with the bottom end of the supporting plate 13. As shown by the arrows in fig. 4, cold air enters from the bottom end of the enclosure 14, passes through the heat dissipation air duct, and then carries out the heat of the magnetic core 11 and the coil 12.

In this embodiment, the magnetic assembly further includes at least one connection end 15, and the connection end 15 extends from the bottom end of the enclosure frame 14 to the outside so as to be connected with an external component.

The magnetic component provided by the embodiment of the application forms a plurality of heat dissipation air channels in the gap between the surrounding frame and the coil by surrounding the surrounding frame on the periphery of the coil, so that cold air dissipates heat of the magnetic core and the coil through the heat dissipation air channels, the temperature of the magnetic core and the coil is reduced, and the heat dissipation efficiency of the magnetic component is improved.

Second embodiment

A second embodiment of the present application provides a power electronic device, which includes the magnetic component described in the first embodiment, and the magnetic component may refer to the first embodiment, which is not described herein again.

The power electronic equipment of this application embodiment through the cladding at the peripheral frame that encloses of solenoid, encloses the clearance formation a plurality of heat dissipation wind channels between frame and the solenoid for cold wind dispels the heat to magnetic core and solenoid through heat dissipation wind channel, has reduced the temperature of magnetic core and solenoid, has promoted magnetic component's radiating efficiency.

The preferred embodiments of the present application have been described above with reference to the accompanying drawings, and are not intended to limit the scope of the claims of the application accordingly. Any modifications, equivalents and improvements which may occur to those skilled in the art without departing from the scope and spirit of the present application are intended to be within the scope of the claims of the present application.

Claims

1. A magnetic assembly comprises a magnetic core, a coil and a support plate; the magnetic core is fixed on the supporting plate, and the wire is wound on the magnetic core; it is characterized by also comprising an enclosing frame;

2. The magnetic assembly of claim 1, wherein the enclosure encloses at least a portion of the coil.

3. The magnetic assembly of claim 2, wherein the bottom end of the enclosure frame is flush with the bottom end of the support plate.

4. The magnetic assembly of claim 3, further comprising at least one connecting end extending from the bottom end of the enclosure frame to the exterior.

5. The magnetic assembly according to any one of claims 1 to 4, wherein the plurality of heat dissipation air channels are symmetrically distributed.

6. A power electronic device, characterized in that it comprises a magnetic assembly according to any one of claims 1 to 5.